Ophthalmologic apparatus
US11185220B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 10, 2020 |
| Grant date | Nov 30, 2021 |
| Priority date | — |
| Expiry date | Jun 5, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B3/158
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An ophthalmologic apparatus includes: an ophthalmologic apparatus body having: an objective lens that faces a subject's eye; a first illumination optical system that irradiates a cornea of the subject's eye with illumination light emitted from a first illumination light source along an optical axis overlapping an optical axis center of the objective lens; an interference image capturing camera that takes an image of a corneal reflection light through the objective lens and outputs an imaging signal; and a calculation unit that calculates, based on a corneal reflection image, of a corneal reflection light, input from the interference image capturing camera, a thickness of a tear fluid film at each position on the corneal surface; and a guide rail that supports the ophthalmologic apparatus body. The guide rail supports the ophthalmologic apparatus body in a rotatable manner such that an optical axis center of the objective lens is positioned obliquely with respect to a horizontal direction orthogonal to a gravity direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.